Identify the quadric surfaces :
a) x^2 -y^2 +z^2 -1 = 0
b) x^2-z^2 = y^2
a) hyperboloid of one sheet
b) cone
surely your text discusses these forms
a) x^2 -y^2 +z^2 -1 = 0
b) x^2-z^2 = y^2
b) cone
surely your text discusses these forms